Bitcoin is a digital currency — a form of Internet cash — that was introduced in 2009. But it isn’t printed, like a dollar. It’s a form of money called cryptocurrency. Transactions are made by updating a log, but there’s no exchange of tokens.
Buyers and sellers are identified through ID numbers, and bitcoin can be used to buy goods and services. While bitcoin use is limited, an increasing number of merchants are accepting them as payment...............................................Full Article: Source